Physical Therapy Assistant Practice Exam 2025 - Free PTA Practice Questions and Study Guide

A burn that involves only the outer epidermis is classified as a superficial burn. This type of burn is characterized by redness and possibly mild swelling, resembling a sunburn. Since it affects only the epidermis, the outermost layer of skin, superficial burns typically heal quickly and usually do not leave any scars. The skin regeneration process does not involve the deeper layers, allowing for complete recovery without lasting damage.

In contrast, the other types of burns involve deeper layers of skin. Superficial partial-thickness burns extend into the upper dermis and may cause blisters and scarring. Deep partial-thickness burns affect deeper layers of the dermis and can result in significant scarring and longer healing times. Full-thickness burns involve all layers of the skin and underlying tissues, often necessitating surgical intervention and resulting in pronounced scarring. Therefore, the characteristics of superficial burns make them distinct in their healing properties and the absence of scarring.